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File upload naming problem


Mast3r Betty
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Hello, I just got into uploading images onto my website, and ran into a little problem with the file names being unique. How would I make it so that when a file is uploaded, it is renamed to a random number (or something equal)?I'm using this nice code from W3;

<?phpif (($_FILES["file"]["type"] == "image/gif")|| ($_FILES["file"]["type"] == "image/jpeg")&& ($_FILES["file"]["size"] < 20000))  {  if ($_FILES["file"]["error"] > 0)    {    echo "Return Code: " . $_FILES["file"]["error"] . "<br />";    }  else    {    echo "Upload: " . $_FILES["file"]["name"] . "<br />";    echo "Type: " . $_FILES["file"]["type"] . "<br />";    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";    if (file_exists("upload/" . $_FILES["file"]["name"]))      {      echo $_FILES["file"]["name"] . " already exists. ";      }    else      {      move_uploaded_file($_FILES["file"]["tmp_name"],      "upload/" . $_FILES["file"]["name"]);      echo "Stored in: " . "upload/" . $_FILES["file"]["name"];      }    }  }else  {  echo "Invalid file";  }?>

Thank you. :)

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you can specify a new name in the move_uploaded_file functionthe second argument of the move_uploaded_file is the destination folder and the file name, so just add a random number

move_uploaded_file($_FILES["file"]["tmp_name"],"upload/" .rand(1.999). $_FILES["file"]["name"]);

just be careful not to add the random numbers in the end of the file name, because a picture lets say somepicture.jpg would be somepicture.jpg3213132 and you will not be able to display that picture in your web page

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